I have to design a flange for 50 Bar pressure air release valve. The flange is bolted to the top of the valve body flange. As water level increases a plug seals upward on the chamfered edge of the central hole and then the pressure increases to 50 bar. Is it correct to design using the attached...
The last 450 mm of the screw is in the dewatering zone and is subjected to high abrasion. The normal stainless steels last 2 months before wearing so it is essential that these flights are hard surfaced. The first 1,5 meters there is no problem with these materials.
We have a screw conv. dia. 165. It has to be hard surfaced on dia. & 15 mm of face for the last 450 mm. Product conveyed is sand & pulp fibre.
Which Tunsten welding method is best for max wear & min. distortion. Technogenia product is recommended but we need the welding process.
I wish to calc the heat transfer thro a cardboard box
consisting of a layer of outer liner 160 gram the fluting 160 gram then inner liner 160 gram. The distance from inner to outer liner is 6 mm. Are the standard heat transfer calculations adequate or are there unforeseen complications to consider
I have used formulae from R.J.Roark & W.C. Young
I have assumed simply supported edges. These are the results
Plate size = 2,15 x 1700 x 16 (5/8") thick
Working pressure = 50 mm WG = 0,0710476 lb/sq. inch
Deflection = .01246" = 0,3 mm
Max stress = 307 lb/sq. inch
Creep/Expansion in 2,15 meter...
I have used formulae from R.J.Roark & W.C. Young
I have assumed simply supported edges. These are the results
Plate size = 2,15 x 1700 x 16 (5/8") thick
Working pressure = 50 mm WG = 0,0710476 lb/sq. inch
Deflection = .01246" = 0,3 mm
Max stress = 307 lb/sq. inch
Creep/Expansion in 2,15 meter...
I managed to find a site http://www.sandmeyersteel.com/310-310S.html which gives the following info.
Density lbm/in3 g/cm3
at 68°F (20°C) 0.29
8.03
Coefficient of Thermal Expansion (min/in)•°F (mm/m)•°K
at 68 - 212°F
(20 - 100°C) 8.8 15.9
at 68 - 932°F
(20 - 500°C) 9.5...
I managed to find a site http://www.sandmeyersteel.com/310-310S.html which gives the following info
Density lbm/in3 g/cm3
at 68°F (20°C) 0.29
8.03
Coefficient of Thermal Expansion (min/in)•°F (mm/m)•°K
at 68 - 212°F
(20 - 100°C) 8.8 15.9
at 68 - 932°F
(20 - 500°C)...
We are manufacturing a valve from a rectangular stainless steel (310)plate 1700 mm x 2150 mm. The deflection of the 20 mm thick plate at normal temp. is 1,9 mm. if the air flow temp is 900 deg C what iffect will this have on the deflection. Is there a way of calculating this effect.
We are manufacturing a valve from a rectangular stainless steel plate 1700 mm x 2150 mm. The deflection of the 20 mm thick plate at normal temp. is 1,9 mm. if the air flow temp is 900 deg C what iffect will this have on the deflection. Is there a way of calculating this effect.
